Tire Pressure Question

AadosX · 08-25-2003, 06:31 PM

If I have driven my car for say 20 miles and my tires aren't "cold" when I am putting air in them should I put extra air or less? My tires say 29 psi front and 33 psi rear.

abomb · 08-25-2003, 06:38 PM

The readings should be HIGHER than the specified cold pressures when the tire is warm.

There is no way to be consistent with this, so the best thing is to measure the tires cold, drive to the service station, measure again. Since the air at the service station is "cold" you will need to add in pounds the difference from the cold measurement and the desired measurement.

So if your tire reads 30 cold and you need 32, and when you get to the service station the tire is 32 hot, then make it 34 hot.

Finally, be sure to check the next morning when the tires are cold again.

AadosX · 08-25-2003, 06:53 PM

cool thanks man

08-25-2003, 06:31 PM	#1
AadosX Registered User Join Date: Jul 2003 Location: Auburn University Posts: 300 My Ride: Topaz Blue 323Ci View My Garage	Tire Pressure Question If I have driven my car for say 20 miles and my tires aren't "cold" when I am putting air in them should I put extra air or less? My tires say 29 psi front and 33 psi rear. __________________

08-25-2003, 06:53 PM	#3
AadosX Registered User Join Date: Jul 2003 Location: Auburn University Posts: 300 My Ride: Topaz Blue 323Ci View My Garage	cool thanks man __________________

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08-25-2003, 06:38 PM	#2
abomb Registered User Join Date: Apr 2003 Location: MD Posts: 575 My Ride: 2004 330Ci View My Garage	The readings should be HIGHER than the specified cold pressures when the tire is warm. There is no way to be consistent with this, so the best thing is to measure the tires cold, drive to the service station, measure again. Since the air at the service station is "cold" you will need to add in pounds the difference from the cold measurement and the desired measurement. So if your tire reads 30 cold and you need 32, and when you get to the service station the tire is 32 hot, then make it 34 hot. Finally, be sure to check the next morning when the tires are cold again.